Diffusion and osmosis (chapter 13)

Question 1

selectively permeable

Answer 1

A selectively permeable membrane allows some but not all substances to pass through.

Question 2

Diffusion

Answer 2

Diffusion is the spreading out of molecules from a region of high concentration to a region of low concentration

Question 3

Osmosis

Answer 3

Osmosis is the movement of water molecules across a semi-permeable membrane from a region of high water concentration to a region of low water concentration.

Question 4

What term describes when a cell is in a solution that is the same concentration as their cytoplasm?

Answer 4

Isotonic

Question 5

What term describes when a cell is in a solution less concentrated than their cytoplasm?

Answer 5

Hypotonic

Question 6

What term describes when a cell is in a solution more concentrated than their cytoplasm?

Answer 6

Hypertonic

Question 7

Turgor

Answer 7

Turgor, or turgor pressure, is the pressure of the cytoplasm and vacuole against the cell wall of a plant.

Question 8

Plasmolysis

Answer 8

Plasmolysis is the loss of water from the cytoplasm and the movement of the cell membrane away from the cell wall.